在数组中查找计数总和

Question

我一直在努力使用此代码几个小时，并且需要一些指导。我有一个500个号码的列表，我需要计算150到200之间的数字。

#include <stdio.h> 
#define N 500 
int main() 
{ 
float a[N]={133.077, 353.171, 272.317, 9.84711, 100.156, 468.909, 127.629, 
1.25313, 331.166, 12.4806, 47.1308, 459.066, 222.106, 320.366, 
447.939, 315.992, 368.533, 488.7, 316.918, 201.467, 61.2842, 356.199, 
131.416, 110.222, 428.207, 4.02826, 359.1, 101.375, 329.052, 35.1193, 
232.471, 101.122, 497.885, 23.6387, 186.34, 142.056, 276.78, 203.273, 
238.401, 326.064, 408.247, 214.573, 421.483, 125.597, 347.963, 
358.374, 291.067, 16.3751, 419.756, 355.345, 431.967, 415., 91.7042, 
321.226, 200.497, 314.879, 93.8189, 298.587, 15.1569, 173.822, 
317.039, 96.3144, 276.756, 347.759, 408.792, 381.742, 355.273, 
223.162, 61.8293, 24.3681, 65.2061, 207.787, 142.073, 169.023, 
133.239, 292.786, 51.3692, 347.797, 432.742, 477.908, 457.55, 
50.2092, 418.585, 305.085, 141.511, 453.895, 142.829, 457.327, 
232.719, 73.1532, 287.556, 235.165, 171.89, 49.7851, 223.35, 28.3785, 
30.8162, 380.762, 91.111, 235.592, 479.447, 33.9658, 158.369, 
257.684, 22.8966, 483.757, 239.784, 452.599, 381.386, 30.8617, 
97.9551, 495.273, 149.667, 457.709, 310.399, 261.108, 477.777, 
408.923, 88.0496, 233.729, 447.961, 29.1611, 496.939, 498.137, 
468.514, 495.195, 339.569, 241.452, 446.617, 12.4387, 100.785, 
288.853, 66.2314, 481.577, 3.83027, 293.581, 416.565, 24.8685, 
193.431, 33.4731, 438.788, 115.945, 106.381, 299.744, 490.828, 
87.784, 109.443, 301.607, 23.314, 92.5887, 269.873, 61.155, 76.6971, 
81.15, 170.088, 272.302, 11.4657, 99.5729, 167.258, 478.721, 94.9008, 
75.7044, 473.827, 446.248, 156.113, 459.759, 368.445, 147.504, 
165.285, 372.975, 260.003, 345.897, 142.971, 281.387, 490.129, 
285.742, 67.274, 201.237, 321.041, 14.4398, 56.8083, 102.664, 
154.783, 35.7185, 461.908, 27.9593, 180.957, 89.4704, 306.795, 
68.1999, 312.511, 441.966, 142.51, 195.225, 53.5086, 97.0697, 
499.538, 413.838, 63.3795, 311.328, 433.264, 213.601, 242.338, 
297.888, 377.456, 111.938, 88.5552, 263.17, 415.549, 84.9783, 
407.599, 174.699, 109.754, 17.7784, 96.0876, 232.733, 467.244, 
322.554, 43.579, 136.663, 467.706, 408.716, 480.199, 325.335, 
35.4412, 196.114, 238.861, 28.4469, 157.985, 85.1769, 151.306, 
265.277, 242.437, 1.19858, 243.707, 91.5778, 133.683, 483.42, 
148.619, 358.845, 166.439, 161.866, 106.04, 223.182, 198.733, 
253.151, 125.841, 397.846, 164.292, 58.0362, 386.98, 370.4, 7.30672, 
472.859, 236.674, 106.122, 264.87, 472.661, 492.967, 15.5447, 
132.187, 489.24, 345.348, 156.7, 465.749, 328.374, 240.307, 433.518, 
268.016, 76.2234, 115.466, 36.6719, 104.724, 19.1872, 228.486, 
166.272, 98.4171, 46.328, 491.812, 61.1499, 333.547, 73.6673, 
498.844, 46.6052, 202.36, 84.4268, 154.496, 389.905, 236.611, 
256.053, 414.189, 456.387, 468.595, 180.829, 299.723, 420.715, 
364.871, 162.642, 72.2363, 255.443, 267.454, 117.314, 80.4245, 
195.293, 433.907, 44.6469, 81.58, 149.688, 232.548, 460.22, 427.084, 
259.782, 495.937, 205.167, 13.8946, 303.395, 28.3416, 25.3379, 
214.172, 382.68, 163.47, 362.696, 142.936, 128.237, 396.016, 246.382, 
63.5113, 432.945, 462.109, 202.735, 481.931, 284.257, 230.561, 
242.515, 55.8477, 25.4743, 234.624, 38.3473, 42.9531, 222.079, 
207.283, 14.0094, 328.781, 339.399, 44.8123, 151.314, 186.845, 
212.161, 148.796, 404.932, 124.334, 279.217, 186.688, 203.197, 
142.403, 494.96, 456.127, 460.683, 87.5551, 470.486, 222.503, 
423.336, 45.602, 249.407, 16.22, 410.326, 216.821, 410.008, 471.408, 
260.013, 30.9757, 198.847, 323.611, 355.081, 406.642, 419.63, 
137.924, 152.883, 265.239, 424.67, 181.797, 192.2, 178.684, 454.185, 
459.295, 268.865, 134.082, 205.778, 444.075, 358.539, 417.261, 
295.77, 472.667, 99.5259, 387.285, 97.9232, 150.056, 244.445, 
480.643, 178.293, 13.1318, 92.5622, 216.404, 253.623, 331.335, 
400.362, 38.7207, 299.438, 372.04, 132.497, 404.639, 94.6604, 
427.966, 273.959, 487.378, 298.89, 455.299, 175.433, 101.093, 
201.967, 306.243, 430.987, 120.45, 24.6742, 294.111, 339.425, 
404.045, 271.051, 462.777, 439.063, 366.325, 471.613, 91.7363, 
307.566, 461.686, 377.953, 163.771, 34.6073, 474.307, 80.0622, 
208.472, 359.175, 374.214, 378.095, 402.229, 428.187, 254.764, 
354.421, 109.117, 89.762, 350.719, 84.3694, 146.341, 150.699, 
484.394, 112.756, 55.6046, 343.133, 23.7084, 234.804, 391.834, 
309.526, 49.4009, 155.742, 184.362, 450.351, 175.187, 277.647, 
282.133, 23.1639, 420.422, 423.226, 174.016, 433.402, 70.7036, 
339.857, 28.6748, 283.703, 86.3095, 228.1, 473.07, 440.57, 63.6011, 
493.296, 82.2363, 132.045, 15.2001, 338.555, 397.874, 181.694, 
340.013, 61.9079, 116.741, 159.53, 419.591, 138.682, 442.725, 
226.128, 349.887, 298.825}; 

在这一点上，我迷路了。我正在考虑如何设置一个带有计数器的程序来计算所有的值。我认为这是解决这个问题的正确思路，但我不知道如何实现它。

Answer 1

像这样：

int count = 0; 
int i; 

for (i = 0; i < N; ++i) { 
    if ((a[i] >= 150.0) && (a[i] <= 200.0)) { 
     ++count; 
    } 
} 

printf("The number of values between 150 and 200 (inclusive) are: %d\n", count); 

Answer 2

尝试：

int i, count = 0; 
for(i = 0; i < 500; i++){ 
    if(a[i] > 150.0 && a[i] < 200.0){count++;} 
} 

Answer 3

你错过了你的右括号，剩下的你的代码应该是这个样子

int i; 
int count = 0; 
for (i = 0; i < N; i++) { 
    if (a[i] >=150 && a[i] <= 200) count++; 
} 
printf("%i\n", count); 

Answer 4

#include <stdio.h> 
#define N 500 

#define LowerLimit 150.0 
#define UpperLimit 200.0 
int main() 
{ 
float a[N]={133.077, 353.171, 272.317, 9.84711, 100.156, 468.909, 127.629, 
1.25313, 331.166, 12.4806, 47.1308, 459.066, 222.106, 320.366, 
447.939, 315.992, 368.533, 488.7, 316.918, 201.467, 61.2842, 356.199, 
131.416, 110.222, 428.207, 4.02826, 359.1, 101.375, 329.052, 35.1193, 
232.471, 101.122, 497.885, 23.6387, 186.34, 142.056, 276.78, 203.273, 
238.401, 326.064, 408.247, 214.573, 421.483, 125.597, 347.963, 
358.374, 291.067, 16.3751, 419.756, 355.345, 431.967, 415., 91.7042, 
321.226, 200.497, 314.879, 93.8189, 298.587, 15.1569, 173.822, 
317.039, 96.3144, 276.756, 347.759, 408.792, 381.742, 355.273, 
223.162, 61.8293, 24.3681, 65.2061, 207.787, 142.073, 169.023, 
133.239, 292.786, 51.3692, 347.797, 432.742, 477.908, 457.55, 
50.2092, 418.585, 305.085, 141.511, 453.895, 142.829, 457.327, 
232.719, 73.1532, 287.556, 235.165, 171.89, 49.7851, 223.35, 28.3785, 
30.8162, 380.762, 91.111, 235.592, 479.447, 33.9658, 158.369, 
257.684, 22.8966, 483.757, 239.784, 452.599, 381.386, 30.8617, 
97.9551, 495.273, 149.667, 457.709, 310.399, 261.108, 477.777, 
408.923, 88.0496, 233.729, 447.961, 29.1611, 496.939, 498.137, 
468.514, 495.195, 339.569, 241.452, 446.617, 12.4387, 100.785, 
288.853, 66.2314, 481.577, 3.83027, 293.581, 416.565, 24.8685, 
193.431, 33.4731, 438.788, 115.945, 106.381, 299.744, 490.828, 
87.784, 109.443, 301.607, 23.314, 92.5887, 269.873, 61.155, 76.6971, 
81.15, 170.088, 272.302, 11.4657, 99.5729, 167.258, 478.721, 94.9008, 
75.7044, 473.827, 446.248, 156.113, 459.759, 368.445, 147.504, 
165.285, 372.975, 260.003, 345.897, 142.971, 281.387, 490.129, 
285.742, 67.274, 201.237, 321.041, 14.4398, 56.8083, 102.664, 
154.783, 35.7185, 461.908, 27.9593, 180.957, 89.4704, 306.795, 
68.1999, 312.511, 441.966, 142.51, 195.225, 53.5086, 97.0697, 
499.538, 413.838, 63.3795, 311.328, 433.264, 213.601, 242.338, 
297.888, 377.456, 111.938, 88.5552, 263.17, 415.549, 84.9783, 
407.599, 174.699, 109.754, 17.7784, 96.0876, 232.733, 467.244, 
322.554, 43.579, 136.663, 467.706, 408.716, 480.199, 325.335, 
35.4412, 196.114, 238.861, 28.4469, 157.985, 85.1769, 151.306, 
265.277, 242.437, 1.19858, 243.707, 91.5778, 133.683, 483.42, 
148.619, 358.845, 166.439, 161.866, 106.04, 223.182, 198.733, 
253.151, 125.841, 397.846, 164.292, 58.0362, 386.98, 370.4, 7.30672, 
472.859, 236.674, 106.122, 264.87, 472.661, 492.967, 15.5447, 
132.187, 489.24, 345.348, 156.7, 465.749, 328.374, 240.307, 433.518, 
268.016, 76.2234, 115.466, 36.6719, 104.724, 19.1872, 228.486, 
166.272, 98.4171, 46.328, 491.812, 61.1499, 333.547, 73.6673, 
498.844, 46.6052, 202.36, 84.4268, 154.496, 389.905, 236.611, 
256.053, 414.189, 456.387, 468.595, 180.829, 299.723, 420.715, 
364.871, 162.642, 72.2363, 255.443, 267.454, 117.314, 80.4245, 
195.293, 433.907, 44.6469, 81.58, 149.688, 232.548, 460.22, 427.084, 
259.782, 495.937, 205.167, 13.8946, 303.395, 28.3416, 25.3379, 
214.172, 382.68, 163.47, 362.696, 142.936, 128.237, 396.016, 246.382, 
63.5113, 432.945, 462.109, 202.735, 481.931, 284.257, 230.561, 
242.515, 55.8477, 25.4743, 234.624, 38.3473, 42.9531, 222.079, 
207.283, 14.0094, 328.781, 339.399, 44.8123, 151.314, 186.845, 
212.161, 148.796, 404.932, 124.334, 279.217, 186.688, 203.197, 
142.403, 494.96, 456.127, 460.683, 87.5551, 470.486, 222.503, 
423.336, 45.602, 249.407, 16.22, 410.326, 216.821, 410.008, 471.408, 
260.013, 30.9757, 198.847, 323.611, 355.081, 406.642, 419.63, 
137.924, 152.883, 265.239, 424.67, 181.797, 192.2, 178.684, 454.185, 
459.295, 268.865, 134.082, 205.778, 444.075, 358.539, 417.261, 
295.77, 472.667, 99.5259, 387.285, 97.9232, 150.056, 244.445, 
480.643, 178.293, 13.1318, 92.5622, 216.404, 253.623, 331.335, 
400.362, 38.7207, 299.438, 372.04, 132.497, 404.639, 94.6604, 
427.966, 273.959, 487.378, 298.89, 455.299, 175.433, 101.093, 
201.967, 306.243, 430.987, 120.45, 24.6742, 294.111, 339.425, 
404.045, 271.051, 462.777, 439.063, 366.325, 471.613, 91.7363, 
307.566, 461.686, 377.953, 163.771, 34.6073, 474.307, 80.0622, 
208.472, 359.175, 374.214, 378.095, 402.229, 428.187, 254.764, 
354.421, 109.117, 89.762, 350.719, 84.3694, 146.341, 150.699, 
484.394, 112.756, 55.6046, 343.133, 23.7084, 234.804, 391.834, 
309.526, 49.4009, 155.742, 184.362, 450.351, 175.187, 277.647, 
282.133, 23.1639, 420.422, 423.226, 174.016, 433.402, 70.7036, 
339.857, 28.6748, 283.703, 86.3095, 228.1, 473.07, 440.57, 63.6011, 
493.296, 82.2363, 132.045, 15.2001, 338.555, 397.874, 181.694, 
340.013, 61.9079, 116.741, 159.53, 419.591, 138.682, 442.725, 
226.128, 349.887, 298.825}; 

int count = 0; 
for (int i = 0; i < N; i++) { 
    if (a[i] > LowerLimit && a[i] < UpperLimit) { 
     count++; 
    } 
} 
printf("Number of elements between %f and %f = %d\n",LowerLimit, UpperLimit, count); 
return 0; 
}