第一篇：c語言編程 有一篇文章共有3行文字每行80個(gè)字符要求分別統(tǒng)計(jì)出其中英文字母數(shù)字空

C語言編程 有一篇文章，共有3行文字，每行80個(gè)字符。要求分別統(tǒng)計(jì)出其中英文字母，數(shù)字，空...2種做法，1種用單字符來讀取輸入，1種用字符串來讀取輸入。1.#include int main(){ int i, upper, lower, digit, space, other;char c;upper = lower = digit = space = other = 0;for(i = 0;i < 3;i++)getchar())!= 'n')

while((c =

if('A' <= c && c <= 'Z')

else if('a' <= c &&

else if('0' <= c

else if(c == upper++;

c <= 'z')lower++;

&& c <= '9')' ')space++;

digit++;

else other++;printf(“upper:%dnlower:%dndigit:%dnspace:%dnother:%dn”, upper, lower, digit, space, other);return 0;} 2.#include int main(){ int i, j, upper, lower, digit, space, other;char str[3][81];upper = lower = digit = space = other = 0;for(i = 0;i < 3;i++){

for(j = 0;str[i][j];j++)

gets(str[i]);

if('A' <= str[i][j]

upper++;&& str[i][j] <= 'Z')

else if('a' <= str[i][j] && str[i][j] <= 'z')lower++;

else if('0' <= str[i][j] &&

digit++;

else if(str[i][j] == ' ')str[i][j] <= '9')

space++;

else

other++;}printf(“upper:%dnlower:%dndigit:%dnspace:%dnother:%dn”, upper, lower, digit, space, other);return 0;}提問人的追問

2009-05-02 11:48

“for(j = 0;str[i][j];j++)”這一句沒有限制條件吧！是不是應(yīng)該寫成“for(j=0;str[i][j]!='