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强制类型转换.c

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强制类型转换.c

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#include <stdio.h>

#include <stdlib.h>

int main(int argc, char *argv[])

{

int a=19;

int b=5;

double c=(double)a/(double)b;

printf("argc=%d \t c=%lf\n",argc,c);

for(int i=0;i<argc;i++){

printf("argv[%d]=%s\n",i,argv[i]);

}

if(argc>2){

char* p=argv[1];

printf("p=%s\n",p);

a=atoi(argv[1]);

b=atoi(argv[2]);

int res=a*b;

printf("res=%d\n",res);

}

return 0;

}