45 lines
811 B
C
45 lines
811 B
C
#include <stdio.h>
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#include <stdlib.h>
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int main ()
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{
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char str[20];
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printf("输入文件名:");
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gets(str);
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FILE *fp = fopen(str, "r");
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if (fp == NULL )
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{
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printf("file open failed\n");
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return 1;
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}
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char buff[255];
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fgets(buff, 255, fp);
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fclose(fp);
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//printf("\n%s\n", buff);
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int i = 0;
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int left = 0, right = 0;
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for ( i = 0 ; i < 255; i++ )
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{
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if ( buff[i] == '\0' || left < right )
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{
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break;
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}
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if ( buff[i] == '{' )
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{
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left ++;
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}else if ( buff[i] == '}' )
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{
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right ++;
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}
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}
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if ( left == right )
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{
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printf("花括号成对出现\n");
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}
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else
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{
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printf("花括号不成对出现\n");
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}
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return 0;
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}
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